An explosion at the Everettville mine in Everettville, W. Va., kills 109 miners, many of whom lie in unmarked graves to this day - 1927
The Obama administration’s National Labor Relations Board implements new rules to speed up unionization elections. The new rules are largely seen as a counter to employer manipulation of the law to prevent workers from unionizing - 2012
April 29
Coxey’s Army of 500 unemployed civil war veterans reaches Washington, D.C. - 1894
An estimated one thousand silver miners, angry over low wages, the firing of union members and the planting of spies in their ranks by mineowners, seize a train, load it with 3,000 pounds of dynamite, and blow up the mill at the Bunker Hill mine in Wardner, Idaho - 1899
The special representative of the National War Labor Board issues a report, “Retroactive Date for Women’s Pay Adjustments,” setting forth provisions for wage rates for women working in war industries who were asking for equal pay. Women a year earlier had demanded equal pay for comparable work as that done by men - 1943
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April 22 - 
April 16 - 
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other unions to form what was to be the forerunner of the United Steel Workers - 1858
